Portion of a shoe sole



FIG. 1 is a bottom plan view of a portion of shoe sole showing my new design; and,

FIG. 2 is a left side elevational view of the portion of a shoe sole.

The broken line showing of the remainder of the foresole in FIG. 1 and the upper in FIG. 2 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe sole, as shown and described. 